Annealing and cooling device for hot-rolled steel balls

Abstract

The invention discloses an annealing cooling device for hot-rolled steel balls. The annealing cooling device for hot-rolled steel balls comprises a first chute, a horizontal transportation shaft, a heat exchange iron tube, a second chute and a water cooling tank. A spiral reinforcing steel bar is connected to the outer shaft wall of the horizontal transportation shaft in a sleeving mode, and the heat exchange iron tube and the horizontal transportation shaft are arranged in parallel; the top end of the first chute is connected to an annealing furnace, a notch in the bottom end of the first chute is located right above one end of the heat exchange iron tube, the other end of the heat exchange iron tube is located right above the top end of the second chute, and the heat exchange iron tube is provided with a circulating water inlet pipe and a circulating water outlet pipe; the bottom end of the second chute is connected to the side wall of the water cooling tank, a rotary shaft with feeding spiral blades is arranged on the water cooling tank, and the water cooling tank is also provided with a cold water inlet pipe, a water outlet pipe and a steel ball outlet. By cooing the annealed steel balls by way of sectional cooling, the steel ball cooling time is relatively short, the annealing effect is good and the work efficiency is high. The annealing cooling device has a function of identifying the internal stress of the steel balls, so that the product quality of the steel balls is guaranteed.

Description

technical field [0001] The invention relates to the technical field of preparation of wear-resistant steel balls, in particular to an annealing cooling device for hot-rolled steel balls. Background technique [0002] Wear-resistant steel balls, also known as wear-resistant media for grinding machines, are consumables. The main purpose is to grind materials to make them finer to meet the use standards. They are mainly used in mines, power plants, cement plants, steel plants, For silica sand factories, coal chemical industry and other fields, the annual consumption of steel balls in the world is 30-50 million tons, of which China's steel ball consumption is 3-5 million tons, which is a big steel ball consumption country. [0003] The forming methods of steel balls are mainly divided into three types: forged steel balls, cast steel balls and hot-rolled steel balls. No matter which forming method is used, the temperature of forming semi-finished steel balls is very high. Forging...

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Problems solved by technology

In the above process, the furnace cooling and air cooling time account for the main part of the entire annealing process time. The higher the furnace cooling temperature, the higher the air cooling efficiency and the shorter the time, but the toughness of the steel ball cannot be guaranteed. The existing The cooling process after spheroidizing annealing still cannot solve the balance between steel ball quality and cooling efficiency

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